COVIDSafe code from version 1.11 (#22)

CovidSafe/API/StatisticsAPI.swift

@@ -0,0 +1,105 @@
+//
+//  MessageAPI.swift
+//  CovidSafe
+//
+//  Copyright © 2020 Australian Government. All rights reserved.
+//
+
+import Foundation
+import Alamofire
+import KeychainSwift
+
+class StatisticsAPI {
+    
+    static let keyCovidStatistics = "keyCovidStatistics"
+    
+    static func getStatistics(completion: @escaping (StatisticsResponse?, MessageAPIError?) -> Void) {
+        let keychain = KeychainSwift()
+        guard let apiHost = PlistHelper.getvalueFromInfoPlist(withKey: "API_Host", plistName: "CovidSafe-config") else {
+            completion(nil, .RequestError)
+            return
+        }
+        
+        guard let token = keychain.get("JWT_TOKEN") else {
+            completion(nil, .RequestError)
+            return
+        }
+        let headers: HTTPHeaders = [
+            "Authorization": "Bearer \(token)"
+        ]
+        
+        CovidNetworking.shared.session.request("\(apiHost)/statistics",
+            method: .get,
+            headers: headers
+        ).validate().responseDecodable(of: StatisticsResponse.self) { (response) in
+            switch response.result {
+            case .success:
+                guard let statisticsResponse = response.value else { return }
+                let statsData = try? PropertyListEncoder().encode(statisticsResponse)
+                UserDefaults.standard.set(statsData, forKey: keyCovidStatistics)
+                
+                completion(statisticsResponse, nil)
+            case .failure(_):
+                var lastStats: StatisticsResponse? = nil
+                if let savedStats = UserDefaults.standard.data(forKey: keyCovidStatistics) {
+                    lastStats = try? PropertyListDecoder().decode(StatisticsResponse.self, from: savedStats)
+                }
+                guard let statusCode = response.response?.statusCode else {
+                    completion(lastStats, .UnknownError)
+                    return
+                }
+                if (statusCode == 200) {
+                    completion(lastStats, .ResponseError)
+                }
+                if (statusCode >= 400 && statusCode < 500) {
+                    completion(lastStats, .RequestError)
+                }
+                completion(lastStats, .ServerError)
+            }
+        }
+    }
+}
+
+struct StatisticsResponse: Codable {
+    
+    let updatedDate: String?
+    
+    let national: StateTerritoryStatistics?
+    let act: StateTerritoryStatistics?
+    let nsw: StateTerritoryStatistics?
+    let nt: StateTerritoryStatistics?
+    let qld: StateTerritoryStatistics?
+    let sa: StateTerritoryStatistics?
+    let tas: StateTerritoryStatistics?
+    let vic: StateTerritoryStatistics?
+    let wa: StateTerritoryStatistics?
+    
+    enum CodingKeys: String, CodingKey {
+        case updatedDate = "updated_date"
+        case national
+        case act
+        case nsw
+        case nt
+        case qld
+        case sa
+        case tas
+        case vic
+        case wa
+    }
+}
+
+struct StateTerritoryStatistics: Codable {
+    let totalCases: Int?
+    let activeCases: Int?
+    let newCases: Int?
+    let recoveredCases: Int?
+    let deaths: Int?
+    
+    enum CodingKeys: String, CodingKey {
+        case totalCases = "total_cases"
+        case activeCases = "active_cases"
+        case newCases = "new_cases"
+        case recoveredCases = "recovered_cases"
+        case deaths
+    }
+}